Hi George,
With your ROV experience, the issue of increasing available thrust is not new to you of course.
To my knowledge, the only difference here is the foil section on the kort nozzle would be harder to replicate for a homebuilder than say a simple constriction...(venturi). To get that foil section on a kort perfect and even all the way around x 2 or 3 thrusters...is a bit of a challenge from a construction standpoint.
Obviously, the Kort is the preferred method (numbers used in the field) but, I found it interesting to see a simple venturi on a well known commercial submersible. It just makes for an interesting simple option to look at.
Yea, ...you've'e just got to smile at HURL!
Joe
From: "George Slaterpryce" <gslaterp@hotmail.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] Venturi vs Kort Nozzle?
Date: Thu, 10 Aug 2006 11:43:24 -0400
Got to love that acronym... HURLI was under the impression that Venturi == Kort (Same effect anyway)Any more info on this?George H. Slaterpryce III
----- Original Message -----From: Joseph PerkelSent: Thursday, August 10, 2006 11:35 AMSubject: [PSUBS-MAILIST] Venturi vs Kort Nozzle?************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 311 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************There was a recent discussion regarding the difficulty in amateur replication of the foil section within a Kort nozzle.Since this discussion and the various options offered, I stumbled across what appears to be a simple venturi arrangement on the Pisces V submersible out of HURL. The implication here being a simplified and rather cost effective increased performance option for the homebuilder.Does anyone know anything specific with regard to this arrangement (such as angles, inlet / outlet size, ratio...etc) vs a standard kort? How to calculate for a given application?Joe